David edwards



(No Model.)

' No. 2A4,571.`

D. EDWARDS.

STEAM TRAP.

Pate'nfed' July 19, 188.1.

UNITED 'STATES PATENT OFFICE.v

DAVID EDWARDS, OF NEW YORK, N. Y.

STEAM-TRAP.

SPECIFICATION forming part of Letters Patent No. 244,571, dated July 19,1881.

Applicationledd'nne 9,1881. (No model.)

To all whom it may concern:

Be it known that I, DAVID EDWARDS, a citizen of the UnitedStates,residing at New York, in the county of New York and State of NewYork, have invented new and useful Improvements in Steam-Traps, ot'which the following is a specification.

This invention consists in the combination, with the oat and with thetrap-valve, of a tube which extends from the lower portion of the loatand connects directly with a horizontallysliding valve havin g an escape-ch annel thron gh it, so that the water resulting from thecondensation of moisture in the oat is always free to escape throughsaid channel, no matter what the position of the valve may be, while atthe same time the rising-and falling motion of the float is not impededby a stufn g-box. Also, in the combination, with the lioat, the stem ofthe float, and the trap-valve, of two oblique guides, whereby whentheoat sinks down the valve is pressed up against its seat by the weightot' the float, and when the float rises the valve is opened. Further, inthe combination, with the float, the stem of the float, the valve, andthe oblique guides, of a ring to which said guides are secured, andwhich can be adjusted on the valve-chamber, so that the distance towhich the valve is opened by the iioat can be regulated.

'Ihis invention is illustrated in the accompanying drawings, in whichFigure l represents a sectional side view of my steam-trap. Fig. 2 .isan inside elevation of the valve-chamber. Fig. 3 is a horizontal sectionin the plane :c Fig. l.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates' a box, which connects by apipe, B, with the steam coil or cords.

C is the lioat, from the lower portion of which extends a tubular stem,D, which is screwed into a hole, a, in the side of thelongitudinallysliding valve E. (See Fig. 3.) The holea communicates witha channel, b, extending out through the end of the valve. y

F is the valve-chamber, which is provided with a circular ange, c, bymeans of which it can be secured to the box A, Fig. 1, and in theinterior of this chamber is formed the valveseat d. From thevalve-chamber extends a tubular nipple, e, into the box A, and to theinner end of this nipple is secured a ring, f,- by means of a set-screw,g, whereby the ring can be adjusted for regulating the distance to whichthe valve is opened by the tloat. Across the opening in this ring extendtwo oblique guides, h h, Fig. 3, and the stem D of the tloat passesbetween these guides. When the oat sinks down its weight presses thestem D up against the guide h, and the valve E is held up against itsseat; but when the float rises the stem D bears against the guide h' andthe valve E is moved away from its seat or opened.

It will be seen from this description that in my steam-trap the waterresulting from the condensation of moisture in the iioat isi'ree to passo through the tubular stem and the channel b in the valve, no matterwhat the position of y the valve may be-that is, communication betweenthe channel b and the float is never cut off, because the valve opensand closes by a longitudinal-slidin g movement. At the same time therising-and-falling motion of ,the loat is notimpeded bya stuffing-box,and no space is left for leakage of steam.

What I claim as new, and desire to secure by Letters Patent, is-

1. The sliding valve E, having the escapechannel b, in combination withthe float and the tubular stem attached directly to the valve, andalways in communication with the escapechannel therein irrespective ofthe position of the valve, substantially as described.

2. The combination, substantially as hereinbefore described, of `theoat, the stern of the float, the trap valve, and the two oblique guidesh h.

3. The combination, substantially as hereinbefore described, of the oat,the stem of the oat, the trap-valve, the two oblique guides, and theadjustable ring f.

In testimony whereof I have hereunto set my hand and seal in thepresence of two subseribin g witnesses.

DAVID EDWARDS.

